JP2593790B2 - Trocar sleeve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an endoscopic surgical trocar sleeve having a valve and a seal at the distal end of the trocar sleeve through which the instrument can be inserted.

[0002]

2. Description of the Related Art German Published Patent Application No. 40 21 02
The trocar known from U.S. Pat. No. 3,077,028 comprises a trocar sleeve which is locked by a trocar mandrel. The trocar mandrel can be replaced by a variety of instruments, especially instruments of different thicknesses.

[0003] German Utility Model Publication No. 71 45 806
The known trocars have an insertion sleeve,
Two surgical instruments are arranged in it. The insertion sleeve has a diaphragm seal, which is used for surgical instruments.
It has a plurality of spaced holes.

[0004] German Utility Model Publication No. 75 13 492
With the known trocar, the connection between the jacket tube and the trocar sleeve can be easily released so that the air passage can be easily cleaned.

[0005]

[0003] Instruments of various thicknesses are used depending on the type of operation, and each instrument must be operated in an airtight manner. Therefore, it is often necessary to provide a seal, usually made of rubber, in the form of a sealing cap with various holes corresponding to the diameter or thickness of each instrument to be inserted. For example, when inserting a sealing cap used for a device having a relatively large outer diameter, the hole in the sealing cap is relatively large in diameter. The seal termination between the seal and the instrument will then no longer be guaranteed when a substantially smaller diameter instrument is then passed through such a seal. It is therefore necessary to have various seals or rubber caps with various holes in place to replace them if necessary.

This takes time and gets in the way of the surgeon.

It is an object of the present invention to improve a trocar sleeve of the type mentioned at the outset, to eliminate said disadvantages and to enable a quick and easy to perform seal exchange.

[0008]

In order to solve the above-mentioned problems, the present invention provides a valve (7, 22) and a device (10, 10).
11) An endoscopic surgical trocar sleeve comprising a seal (2, 4) at the distal end of the trocar sleeve (1, 20) through which the trocar sleeve (1, 20) can be inserted. In addition to the large-diameter seal (2), there is at least one support member (3) for another small-diameter seal (4), and at least one support member (3) is sleeved via a joint (5). SUMMARY A trocar sleeve is characterized in that it is connected to a sleeve (1) and the joint (5) is arranged in a rigid holder (6).

[0009]

According to the invention, since the at least one support member is connected to the trocar sleeve via a coupling, the exchange operation can be performed by a simple swivel operation which can be performed very simply, quickly and reliably. The significant advantage of being able to do so is obtained.

According to the invention, the coupling is arranged on a rigid holder, which is particularly preferably arranged radially with respect to the trocar sleeve. To state the advantage of this measure, the support member projects radially if it is not necessary to fit a seal on it, and thus does not interfere with the operations performed axially in the trocar sleeve. If necessary, several radially projecting support members can also be used in a space-saving manner, in which case the support members protrude at appropriate intervals in the circumferential direction. For example, in the case where two instruments of different diameters are inserted in addition to an instrument having a relatively large diameter, for example, two support members which are projected at an angle shifted by 90 ° C to 120 ° C in the circumferential direction should be provided. Can be
In this case, the support members can be respectively swung into and moved to a predetermined place.

[0011]

In another embodiment of the present invention, the support member has a fitting tube through which the support member can be inserted into the through hole of the large diameter seal.

A great advantage of this measure is that the support element can easily be inserted into the large hole of the seal by a sliding fit via the fitting tube.

In a further embodiment of the invention, the valve is locked via a bayonet lock, in which case the bulb has a bayonet guide into which the lid can be screwed. In this case, it is particularly preferred that the lid carries at least one support member.

The advantage of this measure is that, on the one hand, the valve can be opened very simply for cleaning and, on the other hand, a simple movement of the plug-in lock allows the insertion of a lid, possibly with additional support, as well. . This makes it possible to prepare trocar sleeves with similar structural dimensions per se, together with various lids, which lids accordingly have different support members.

The features pointed out above and the features still described below can of course be applied not only in the described combinations, but also in other combinations or alone without departing from the scope of the invention.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail below with reference to the drawings and some selected embodiments.

The trocar sleeve 1 shown in FIG. 1 has a valve 7 at one end. This valve 7 is a flap valve for passing instruments of various thicknesses. A detailed description of such a valve, which is known per se, will be given in connection with the embodiment of FIGS.

A cleaning liquid or air passage connection portion 8 protrudes from the valve 7 in the radial direction. The connection 8 can start and close a plug, not shown here in detail. Such connections having various functions are also known per se in the field and therefore need not be detailed.

A switching lever 9 for the valve 7 is arranged at the far patient end of the valve 7.

The detailed mode of operation and construction is also described in connection with the embodiment of FIGS.

At the distal end of the trocar sleeve 1 is provided a cap-shaped rubber seal 2 for passing a large-diameter D instrument 10, as seen in FIG.

Provided in the region of the rubber seal 2 is a holder 6 which is arranged radially, ie projecting at an angle with respect to the trocar sleeve 1. At the outer end of the holder 6, a joint 5 is provided, on which a support member 3 is arranged, which is arranged with a sealing cap 4 for passing a surgical instrument 11 of small diameter d as shown in FIG. is there.

In the operating position shown in FIG. 1, the support member 3 is pivoted radially outwardly about the joint 5 together with the sealing cap 4.

As can be seen from FIG. 2, a surgical instrument 10 having a relatively large diameter D has been introduced into the trocar sleeve. This diameter D is about 5 mm in the illustrated embodiment. Surgical instrument 1
0 is sealed and passed through the rubber seal 2 or through a hole therein not shown in detail.
The sealing cap 4 is pivoted about the joint 5 together with the support member 3 in the illustration of FIG. 2, and the operability of the surgical instrument 10 which slides back and forth in the axial direction is not impaired by this.

In the situation shown in FIG. 3, the support member 3 pivots, and a protruding fitting tube not shown in detail in this figure enters the hole of the rubber seal 2 and the sealing cap 4 or its small diameter not shown here in detail. The through hole is coaxial and fits over the sleeve sleeve. FIG. 3 shows how a surgical instrument 11 of small diameter d, here for example 3 mm, has been pushed into the trocar sleeve.

It is not necessary for the support member 3 to enter the rubber seal 2 through the fitting tubular projection, and it is sufficient to make the support member 3 abut on the rubber seal 2.

It is obvious that the turning operation of the support member 3 from the position shown in FIG. 1 to the turning position shown in FIG. 3 via the position shown in the drawing can be executed very simply and instantaneously.

The reverse operation can be performed quickly as well. That is, after withdrawing the surgical instrument 11 from the position shown in FIG. 3, the support member 3 can be pivoted again to the position shown in FIG. A surgical instrument 10 can be introduced.

1 to 3 show only a single support member 3, but it is also possible, for example, to arrange two or more support members in the circumferential direction. Furthermore, the joint 5 is constructed so that it is relatively difficult to move so that the laterally pivoted support member remains in its respective position and does not automatically pivot under its own weight when in the inclined position or the inclined position of the trocar sleeve. You can also put it. On the other hand, the stiffness is such that the support member 3 can still be moved easily by hand.

It is also possible to remove the rubber seal 2 first, and then to rotate the support member appropriately only after that, and it is possible to remove this by pulling it out. In this case, care is taken that the support member is hermetically fitted to the valve 7.

In another embodiment shown in FIGS. 4 to 7, the main parts, in particular the parts relating to the indicating member 3 according to the invention, have the same construction as in the previous embodiment.

The trocar sleeve 20 shown in FIGS. 4 and 5 also comprises a valve 22, from which a connection 23 projects radially. The swing lever 25 serves to open and close the connection 23.

The valve 22 has a case 24 with a bayonet guide 26 at the distal end of the case.

At the distal end of the patient, the case 24 is locked via a lid 28, which is provided with a disk 30 at the end facing the case 24, the outer diameter of the disk being the hollow cylindrical case 2
4 is approximately equal to the inside diameter.

Pin 32 projecting radially from disk 30
Are provided for engagement with the insertion type guide 26.

At the end opposite the case 24, the disc 23 is provided with a valve flap 34, which can be opened in various ways.

As can be read from FIG. 6, the valve flap 34 is opened by the pivoting lever 36 pivoting about its pivot axis, not shown here in detail, as indicated by the arrow in FIG. An axially aligned tappet 38 coupled to a swing lever 36 opens the valve flap 34.

As seen in FIG. 7, the valve flap 3
The opening of 4 can also be performed by pushing in the surgical instrument 11 (this is also jarring in the case of the large-diameter instrument 10).

The turning position of the support member 3 shown in FIG.
The projecting fitting tube 42 has been pushed into the sealing cap 4, in which case the sealing cap 4
Alternatively, the through holes are coaxially aligned with the through holes of the rubber seal 2.

According to the invention, in addition to the large-diameter perforated seal, the trocar sleeve has at least one support for another small-diameter seal.

The provision of at least one support member for another small-diameter seal allows the small-diameter seal to be mounted on the spot, if necessary, by means of a simple and quick operation.

If the support member is provided directly on the trocar sleeve, the further seal may not be accessible to the trocar sleeve as it is gripped from the previously provided side away. The conversion or exchange operation can be performed instantaneously and does not require strict attention. That is, attention can still be directed, for example, to endoscopic operation.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment of a trocar sleeve according to the invention without the instrument.

FIG. 2 is a view similar to FIG. 1, but with the introduction of a larger diameter surgical instrument.

FIG. 3 corresponds to the illustration of FIG. 2, but after the introduction of a small-diameter surgical instrument.

FIG. 4 is a side view of another embodiment having a bayonet lock, similar to the illustration of FIG. 1;

FIG. 5 is a view similar to FIG. 4, with the lid part of the plug-in lock removed;

6 shows the removed lid part as seen in FIG. 5 in the operating position with the valve flap open.

FIG. 7 is an illustration of a trocar sleeve lid component alone corresponding to the operating position of FIG. 3;

[Explanation of symbols]

 1,20 sleeve sleeve 2 large-diameter seal 3 support member 4 small-diameter seal 5 joint 6 rigid holder 7,22 valve

Claims (6)

(57) [Claims] A valve (7, 22) and a device (10, 1).
An endoscopic surgical trocar sleeve comprising a seal (2, 4) at the distal end of a trocar sleeve (1, 20) through which the trocar sleeve (1, 20) can be inserted. In addition to the large-diameter seal (2), there is at least one support member (3) for another small-diameter seal (4), and at least one support member (3) is sleeved via a joint (5). A trocar sleeve coupled to the sleeve (1), characterized in that the joint (5) is arranged on a rigid holder (6). 2. The trocar sleeve according to claim 1, wherein the holder is arranged to project radially with respect to the trocar sleeve. 3. The support member (3) has a fitting tube (42) through which the support member can be inserted into an insertion hole of the large-diameter seal (2). A trocar sleeve according to any one of the preceding claims. 4. A valve (22) having a plug-in lock (26,
32) The device is locked by way of (32).
4. The trocar sleeve according to claim 3. 5. The valve (22) is provided with a plug-in guide (2).
5. The trocar sleeve according to claim 4, comprising a case (6) with 6) and a lid (28) which can be introduced therein. 6. The trocar sleeve according to claim 5, wherein the lid (28) carries at least one support member (3).